Howdy Steve and welcome to BimmerSport - good to see another E53 owner on here Looks very nice in black and with those rims.
Yes the dark 'anthracite' hoodlining marks your vehicle as a Sports Package or 'SportPac' which usually means sports steering wheel, seats and suspension. Yours is also the facelift model judging by the nose and the date - so you'll have the better xDrive 4WD system and the more powerful N62 engine as well.
@Tom Delahunty up here has a similar vehicle and might be good to compare notes.
I've thoroughly enjoyed my 2001 (pre-facelift) E53 4.4i SportPac with 227KMs on it, but spent a fair bit of dosh on overdue/'bound to happen' maintenance -even with a mechanical breakdown insurance (MBI) plan. If you don't have one of these, look at getting one. Jono at MTF Mt Victoria here in Welly (ph 027 22 44 295) can arrange one for you - BMW Car Club members are eligible for a decent discount too.
I've just downloaded a manual in PDF form - lots of other things to spend on
This is my beasty here ...